Gratien de Paris. (1957). I know Christ: The personality and spirituality of St. Francis of Assisi. Saint Bonaventure University, The Franciscan Institute.
Chicago-referens (17:e uppl.)Gratien de Paris. I Know Christ: The Personality and Spirituality of St. Francis of Assisi. St. Bonaventure, N.Y.: Saint Bonaventure University, The Franciscan Institute, 1957.
MLA-referens (8:e uppl.)Gratien de Paris. I Know Christ: The Personality and Spirituality of St. Francis of Assisi. Saint Bonaventure University, The Franciscan Institute, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.